That looks like a "CB" to me, thought the CD had a pressed steel frame? Just being picky coz I'm bored waiting for breakfast at the cafe and nothing better to do.
Suzuki GS250T - hideously unreliable piece of junk... Bought from a slightly iffy second hand bike shop in Fareham in 1984. Sold to some poor unsuspecting fool in 1985. Awful, awful, awful bike